S
M
T
W
T
F
S
30
66°
50°
31
65°
53°
1
68°
54°
2
69°
54°
3
69°
53°
4
68°
48°
5
66°
48°
6
65°
53°
7
67°
53°
8
68°
50°
9
68°
54°
10
67°
54°
11
68°
53°
12
67°
52°
13
66°
48°
14
63°
50°
15
62°
51°
16
63°
53°
17
63°
52°
18
66°
51°
19
64°
52°
20
64°
52°
21
66°
51°
22
65°
48°
23
60°
46°
24
60°
51°
25
61°
49°
26
61°
49°
27
60°
48°
28
59°
51°
29
62°
50°
30
61°
51°
1
62°
50°
2
62°
47°
3
61°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grimethorpe
Grimethorpe's September 2026 forecast shows daily high temperatures ranging from 59° to 69°, with overnight lows between 46° and 54°. The average high for September is 64° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Grimethorpe. See also: October | November | December.
